Ground Motion Analyzer
Process acceleration records, calculate engineering intensity measures and a linear 5%-damped response spectrum, then compare the record directly against a selected seismic-code target.
Processed ground motion
Acceleration, integrated velocity and displacement after the selected baseline treatment.
Response spectrum vs code target
Pseudo-spectral acceleration against oscillator period. The code target uses the selected standard parameters.
Calculating…Scale inactive · 1.00×
Record spectrumCode target · 5% dampingScaled record — overlaps at 1.00×
Record information
Choose a record or upload a file.
Analysis details
| Samples | — |
| Time step | — |
| Record duration | — |
| Damping | — |
| Minimum resolved period | — |
| Target scale factor | — |
Engineering note — The response spectrum uses linear SDOF oscillators and Newmark's average-acceleration method. Very short periods relative to the input time step are internally substepped, but record quality, component selection, baseline correction and code-specific scaling rules remain the user's responsibility. This tool is for preliminary engineering and education, not final design or record-selection compliance.
Not for structural design or code compliance